If the equivalent load in case of radial ball bearing is 500 N and the basic dynamic load rating is 62500 N, then life of this bearing is
The figure below shows a steel rod of 25 mm2 cross sectional area. It is loaded at four points, K, L, M and N. Assume Esteel =200GPa.The total change in length of the rod due to loading is
The shell of a boiler is 2 m in diameter and the plates are 2 cm thick. By how much % the working pressure will be reduced if the efficiency of the joint is 80% as compared to 100% efficiency [Assume safe working stress for the shell plates as 70 MPa]
GO and NO-GO plug gauges are to be designed for a hole mm. Gauge tolerances can be taken as 10% of the hole tolerance. The sizes of GO and NO-GO gauge will be respectively(On the basis of workshop gauge)______.
Under logarithmic decrement, the amplitude of successive vibrations are
The project activities, precedence relationships and durations are described in the table. The critical path of the project is
Match List-I (type of gear failure) with List-II (Reasons) select the correct answer using the code given below the lists: List-I A). Scoring B). Pitting C). Scuffing D). Plastic flow List-II 1). Oil film breakage 2). Yielding of surface under heavy loads 3). Cyclic loads causing high surfaces stress 4). Insufficient lubrication
A simple spring-mass vibrating system has a natural frequency of N. If the spring stiffness is halved and the mass is doubled, then the natural frequency will become
If young’s modulus of elasticity of a material is 140 GPa and Bulk modulus is 70 GPa, what will be the Poisson’s ratio (μ)?
Which of the statements given below is/are correct ? (1) Pressure angle is defined as the angle between the direction of follower movement & the normal to the base curve at any point. (2) In case of radial translating roller follower, parabolic motion of the follower is very appropriate for high speed cams.